JP2011052455A - Construction machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance the assemblability of a cover member by reducing the quantity of tightening sections for attaching the cover member to a structure on the frame side. <P>SOLUTION: Insertion holes 24B are provided to a utility chamber cover 24 on the left side. Projecting claws 25B to be inserted into the insertion hole 24B are provided to the left side of a hydraulic device cover 25. While the projecting claws 25B are inserted into the insertion holes 24B, the right side of the hydraulic device cover 25 is attached to a hydraulic tank 14 and a fuel tank 15 using screw members 26 or the like. Thus, the left side of the hydraulic device cover 25 can be easily attached by merely inserting the projecting claws 25B into the insertion holes 24B of the utility chamber cover 24. Since the right side of the hydraulic device cover 25 is merely tightened to the hydraulic tank 14 and the fuel tank 15 with the screw members 26 or the like, the tightening operation can be facilitated by reducing the quantity of the screw members 26 or the like. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a construction machine suitably used as, for example, a hydraulic excavator, a hydraulic crane, or the like.

  In general, a hydraulic excavator as a construction machine is a self-propelled lower traveling body, an upper revolving body mounted on the lower traveling body via a swivel device so as to be capable of swiveling, and an uplifting motion in front of the upper revolving body. It is comprised by the working apparatus provided so that it was possible.

  The upper swing body includes a swing frame forming a support structure, a cab provided on the left front side of the swing frame and on which an operator rides, an engine mounted on the rear side of the swing frame and driving a hydraulic pump, A partition plate located between the cab and the engine and provided on the left side of the swivel frame to form a utility chamber for housing consumables such as grease and maintenance tools, and the swivel with a gap from the partition plate A hydraulic oil tank and a fuel tank provided on the right side of the frame and a building cover that covers the engine, partition plate, turning motor, and the like are roughly configured (see, for example, Patent Document 1 and Patent Document 2).

  Here, the building cover of the excavator is roughly constituted by, for example, left and right side covers erected on both the left and right sides of the revolving frame, and an upper surface cover provided over the top of each side cover. ing. The top cover is an engine cover that covers the engine, hydraulic pump, etc., a utility chamber cover that covers the upper side of the utility chamber, a swing motor of the swing device, a control valve, etc. that is located between the utility chamber cover and the hydraulic oil tank. It is divided into a hydraulic equipment cover that covers the hydraulic equipment. And the hydraulic equipment cover used as a part of a building cover consists of board | plate materials, such as a substantially rectangular shape, and each corner | angular corner part is bolted with respect to a utility chamber cover and a hydraulic oil tank.

JP 2007-284864 A JP 2007-170129 A

  By the way, in the conventional hydraulic excavator, when the hydraulic equipment cover constituting the upper cover of the building cover is attached to the utility chamber cover and the hydraulic oil tank, each corner is attached using a bolt. Therefore, the attachment of the hydraulic equipment cover requires at least four bolts in the case of a rectangular shape, and there is a problem that it takes time and labor for the fastening operation. In addition, since the hydraulic equipment cover is relatively large, the operator must perform the fastening operation while moving to each corner, and there is a problem that the assembly workability is poor.

  The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to provide a construction machine that can reduce the number of fastening points when mounting a cover member and improve the assembly workability of the cover member. It is to provide.

  A construction machine according to the present invention includes a self-propelled lower traveling body and an upper revolving body that is pivotably mounted on the lower traveling body, and the upper revolving body includes a revolving frame that forms a support structure; A cab provided on the front side of the turning frame on one side of the left and right sides of the turning frame, on which an operator rides, an engine provided on the rear side of the turning frame for driving a hydraulic pump, the cab and the engine One structure provided on one side of the left and right sides of the swivel frame located between and the other structure provided on the other side of the left and right directions of the swivel frame with a distance from the one structure. Another structure, a device arrangement space formed between the one structure and the other structure, and the one structure and the other structure to cover the device arrangement space And a provided cover member.

  In order to solve the above-mentioned problem, the feature of the configuration adopted by the invention of claim 1 is that the one structure is provided with an insertion port located on the upper surface side, and the cover member has a left-hand side. , A protruding claw positioned on one side of the right side for insertion into the insertion port of the one structure is provided, and the protruding claw is provided on the other side of the left and right sides of the cover member. There is a configuration in which fastening means for fastening the cover member to another structure is provided in a state where the cover member is inserted.

  According to a second aspect of the present invention, the insertion port is formed with a wide portion formed larger than the width dimension of the protruding claw, and narrower than the wide portion on one end side in the length direction of the wide portion. The protrusion claw is constituted by a claw engaging portion with which the protrusion claw can be engaged.

  According to a third aspect of the present invention, there is provided a structure in which a support protrusion is provided on the upper surface of the one structure so as to be positioned in the vicinity of the insertion port and to come into contact with the cover member from below.

  According to a fourth aspect of the present invention, the fastening means includes a female screw provided on the upper surface side of the other structure, a screw insertion hole located on the other side of the cover member and communicating with the female screw, and the screw insertion. The screw member is configured to be inserted into the hole and screwed to the female screw to fix the other side of the cover member on another structure.

  According to a fifth aspect of the present invention, on the other side in the left and right directions where the other structure is disposed, a step for getting on and off to get on and off the other structure is provided.

  According to a sixth aspect of the present invention, the one structure is a part of a building cover that defines a utility room, the other structure is a tank that stores hydraulic oil and / or fuel, and the equipment arrangement space A hydraulic device is disposed in the cover member, and the cover member serves as a hydraulic device cover that covers the hydraulic device.

  According to the first aspect of the present invention, the operator gets on another structure and inserts the protruding claw on one side into the insertion port provided on the upper surface side of the one structure with the cover member. Next, the other side of the cover member is placed on another structure with the protruding claws inserted into the insertion port, and fastened to the other structure using fastening means. Thereby, a cover member can be attached over one structure and another structure. Moreover, the cover member can be removed by loosening the fastening means.

  Accordingly, one side of the cover member can be attached simply by inserting the protruding claw into the insertion port of the one structure. Moreover, since only the other side should just be fastened to another structure using a fastening means, the number of fastening means can be reduced.

  As a result, one side of the cover member can be easily attached to one structure because the protruding claw is only inserted into the insertion port. Moreover, since the fastening means is provided only on the other side of the cover member, the operator can easily perform the work without moving from other structures. In addition, the number of fastening means that are fastened in the assembly work can be reduced. By these things, the assembly workability | operativity of the cover member with respect to each structure can be improved.

  According to invention of Claim 2, when inserting the protrusion nail | claw provided in one side of the cover member in the insertion port of one structure, by inserting in the wide part formed larger than the width dimension of a protrusion nail | claw For example, the protruding claw of the cover member can be easily inserted into the wide portion of the insertion port even from another distant structure. And if a protrusion nail is inserted in a wide part, this protrusion nail can be arranged in a nail engaging part by moving a protrusion nail to one end side of a wide part with a cover member. Thereby, the protruding claw can be engaged with a claw engaging portion that is narrower than the wide width portion, that is, slightly wider than the protruding claw.

  Therefore, the projecting claw of the cover member can be inserted into the insertion port even from another distant structure, and workability can be improved. In addition, since the projecting claw can be engaged with the narrow claw engaging portion, it is possible to prevent one side of the cover member from rattling in the length direction (front and rear) of the insertion port, and due to vibration or the like. Noise can be reduced, life and reliability can be improved.

  According to the invention of claim 3, in the state where the projecting claw of the cover member is inserted into the insertion port, the support protrusion provided on the upper surface of the one structure abuts on and supports the cover member from below. It is possible to prevent the one side of the cover member from shaking up and down, reduce noise due to vibration and the like, and extend the life.

  According to the invention of claim 4, when the protruding claw of the cover member is inserted into the insertion port of one structure, the screw member constituting the fastening means is inserted into the screw insertion hole of the cover member, and the other structure And screwed into a female screw provided on the upper surface side. Thereby, the other side of a cover member can be fixed on another structure. Further, by loosening the screw member, it is possible to remove the cover member and perform maintenance work such as hydraulic equipment.

  According to the invention of claim 5, the operator can easily get on and off the other structure using the step for getting on and off. And the operator who got on another structure can perform the attachment operation | work of a cover member. As a result, the operator can perform work only on other structures that can be easily and safely boarded / exited by the boarding / alighting steps, and the assembly work can be performed with less movement associated with the mounting work of the cover member. , Safety, etc. can be improved.

  According to the invention of claim 6, the hydraulic equipment cover that covers the hydraulic equipment in the equipment arrangement space is attached and removed between a part of the building cover that defines the utility room and the tank that stores hydraulic oil and / or fuel. can do.

It is a front view which shows the hydraulic excavator applied to embodiment of this invention. FIG. 2 is an enlarged plan view showing an upper swing body in FIG. 1. It is an enlarged plan view which shows the state which removed the upper surface cover of the building cover from the upper turning body of FIG. It is a principal part expansion perspective view which shows the state which attached the hydraulic equipment cover with respect to the utility chamber cover, the hydraulic oil tank, and the fuel tank. It is the principal part expansion perspective view which looked at the state which is going to attach a hydraulic equipment cover to a utility chamber cover from the same position as FIG. It is the principal part expansion perspective view which looked at the state which inserted the protrusion nail | claw of the hydraulic equipment cover in the insertion port of the utility room cover from the same position as FIG. It is a principal part expansion perspective view which expands and shows the insertion port, protrusion nail | claw, etc. in FIG. It is the expanded sectional view which looked at the engagement state of an insertion port and a protrusion nail from the direction of arrows VIII-VIII in Drawing 4. FIG. 6 is an enlarged cross-sectional view of a state in which a hydraulic equipment cover is attached to a fuel tank using a screw member or the like as viewed from the direction of arrows IX-IX in FIG. It is a top view of the upper turning body which shows the 1st modification of this invention. It is a top view of the upper turning body which shows the 2nd modification of this invention.

  Hereinafter, as a construction machine according to an embodiment of the present invention, a crawler type hydraulic excavator will be described as an example and described in detail with reference to FIGS.

  In FIG. 1, reference numeral 1 denotes a crawler type hydraulic excavator as a construction machine. The hydraulic excavator 1 is mounted on a self-propelled lower traveling body 2 and can be turned on the lower traveling body 2 via a turning device 3. The upper revolving body 4 and the working device 5 which is provided on the front side of the upper revolving body 4 so as to be able to move up and down and perform excavation work of earth and sand and the like are roughly constituted.

  Reference numeral 6 denotes a revolving frame that constitutes a part of the upper revolving structure 4, and the revolving frame 6 is formed as a support structure. As shown in FIGS. 2 and 3, the revolving frame 6 is provided with a bottom plate 6A made of a thick steel plate or the like extending in the front and rear directions, and standing on the bottom plate 6A, with a predetermined interval in the left and right directions. A left vertical plate 6B and a right vertical plate 6C extending forward and rearward, and a plurality of left extended beams 6D and right extended beams 6E extending in the left and right directions from the bottom plate 6A and the vertical plates 6B and 6C. A left side frame 6F and a right side frame, which are disposed at intervals in the left and right directions of the vertical plates 6B and 6C and extend forward and rearward at the front ends of the left and right extending beams 6D and 6E. 6G is roughly configured. The working device 5 is attached to the front side of each of the vertical plates 6B and 6C so as to move up and down.

  Reference numeral 7 denotes a cab mounted on the left front side of the swivel frame 6 on the left side of the work device 5, and the cab 7 is used by an operator. Inside the cab 7, a driver's seat on which an operator sits, an operation lever for traveling, an operation lever for work, and the like (all not shown) are arranged.

  Reference numeral 8 denotes a counterweight provided at the rear portion of the revolving frame 6. The counterweight 8 balances the weight with the working device 5 and is attached to the rear end portions of the left and right vertical plates 6B and 6C.

  Reference numeral 9 denotes an engine provided on the rear side of the swivel frame 6 located on the front side of the counterweight 8 (see FIG. 3). The engine 9 is placed horizontally so as to straddle the left and right vertical plates 6B and 6C, and is mounted in a vibration-proof state at the rear positions of the left and right vertical plates 6B and 6C. An engine-driven cooling fan 9A is provided on the left side of the engine 9. On the other hand, a hydraulic pump 10 for supplying pressure oil to an actuator or the like of the work device 5 is attached to the right side of the engine 9.

  Reference numeral 11 denotes a heat exchange device mounted on the revolving frame 6 on the left side of the engine 9. The heat exchange device 11 surrounds the heat exchanger 11A such as a radiator or an oil cooler disposed so as to face the cooling fan 9A and the heat exchanger 11A in order to efficiently distribute the cooling air to the heat exchanger 11A. The support frame 11B is generally configured.

  Reference numeral 12 denotes two partition plates provided between the cab 7 and the engine 9 and provided on the left side of the revolving frame 6. These two partition plates 12 constitute a part of one structure forming the utility chamber 13. Moreover, each partition plate 12 consists of a substantially rectangular plate body, and is standingly arranged with the predetermined space | interval in the front and back direction. On the other hand, a utility chamber cover 24 of an upper surface cover 23 constituting a building cover 20 described later is attached to the upper side of each partition plate 12 so as to cover the upper side of the utility chamber 13. Furthermore, the left side of each partition plate 12 is closed by the front door cover 21A of the left side cover 21 so that it can be opened and closed.

  One structure composed of the two partition plates 12 and the utility chamber cover 24 is formed in a substantially box shape, and is one side of the revolving frame 6 in the left and right directions, that is, the left vertical plate 6B and the left side. It is disposed between the frame 6F.

  Reference numeral 14 denotes a hydraulic oil tank as another structure provided on the right side of the revolving frame 6 with a space between each partition plate 12 and the utility chamber cover 24 forming one structure. The hydraulic oil tank 14 is formed as a sealed container, and is disposed between the right vertical plate 6C and the right side frame 6G of the revolving frame 6. As shown in FIG. 5, the hydraulic oil tank 14 is provided with two female screws 14 </ b> B (only the front side is illustrated) spaced apart in the front and rear directions at the left end of the upper surface plate 14 </ b> A. The two female screws 14B constitute part of the fastening means, and are formed by, for example, nuts (not shown) welded to the lower surface side. Each female screw 14B is screwed with a screw member 26 for fixing the right side of a hydraulic equipment cover 25 described later.

  Reference numeral 15 denotes a fuel tank as another structure disposed adjacent to the front side of the hydraulic oil tank 14. The fuel tank 15 is formed as a substantially rectangular parallelepiped sealed container and swivels together with the hydraulic oil tank 14. The frame 6 is disposed between the right vertical plate 6C and the right side frame 6G. Further, as shown in FIG. 5 and the like, two brackets 15A are attached to the upper position of the left side surface of the fuel tank 15 with an interval in the front and rear directions. Each bracket 15A is provided with a female screw 15B. It has been.

  As shown in FIG. 9, the female screw 15B constitutes a part of the fastening means, and is formed by, for example, a nut 15B1 welded to the lower surface side of the bracket 15A. A screw member 26 is screwed onto the nut 15B1 of each female screw 15B.

  Reference numeral 16 denotes a tool box provided at the right front portion of the revolving frame 6 on the front side of the fuel tank 15. The tool box 16 is formed in a flat box shape and accommodates various tools as in the utility chamber 13.

  17 is an equipment arrangement space (see FIG. 3) formed between a utility chamber cover 24, which will be described later, and the hydraulic oil tank 14 and the fuel tank 15. The equipment arrangement space 17 is a vertical arrangement on the left and right sides of the revolving frame 6. It is formed on the bottom plate 6A between the plates 6B and 6C. The device arrangement space 17 houses hydraulic devices such as a swing motor 18 and a control valve device 19 which will be described later. Here, for example, a part of the engine 9 can be arranged as a device in the device arrangement space 17.

  Reference numeral 18 denotes a turning motor disposed in the device arrangement space 17 which is substantially in the center of the turning frame 6, and the turning motor 18 constitutes a drive unit of the turning device 3. Reference numeral 19 denotes a control valve device disposed in the device arrangement space 17 in the vicinity of the rear side of the swing motor 18, and the control valve device 19 is configured as a multiple valve device in which a plurality of control valves are connected. Has been. The control valve device 19 controls the pressure oil supplied to and discharged from the actuator of the lower traveling body 2, the actuator of the work device 5, and the swing motor 18 of the swing device 3. Here, the upper side of the swing motor 18 and the control valve device 19 is covered with a hydraulic equipment cover 25 of an upper surface cover 23 described later.

  Next, the building cover 20 provided to cover the engine 9, the heat exchange device 11, the partition plate 12, the turning motor 18, the control valve device 19 and the like mounted on the turning frame 6 will be described.

  That is, reference numeral 20 denotes a building cover provided on the revolving frame 6. The building cover 20 includes a left side cover 21 extending vertically on the left side frame 6F and a right side frame 6G as shown in FIG. Is formed of a right side cover 22 extending in the vertical direction and an upper surface cover 23 extending in the horizontal direction over the upper portions of the side covers 21 and 22.

  Further, the left side cover 21 is located on the front side and covers the left side of the utility chamber 13 so that it can be opened and closed, and the left side cover 21 located on the rear side covers the left side of the heat exchange device 11 so that it can be opened and closed. It is comprised by the rear door cover 21B. On the other hand, the right side cover 22 is located on the front side so that the right side of the hydraulic oil tank 14 can be opened and closed, and the right side cover 22 is located on the rear side so that the right side of the hydraulic pump 10 can be opened and closed. The rear door cover 22B is covered.

  Further, the upper surface cover 23 is located on the rear side and covers the upper periphery of the engine 9, a fixed cover 23A, a right engine cover 23B provided on the right side of the fixed cover 23A so as to be openable and closable, and the fixed cover. The left engine cover 23C is provided on the left side of 23A so as to be openable and closable, and includes a utility chamber cover 24 and a hydraulic equipment cover 25 described later.

  Reference numeral 24 denotes a utility chamber cover attached on each partition plate 12 so as to cover the upper side of the utility chamber 13. As shown in FIG. 5, the utility chamber cover 24 is formed as a substantially rectangular plate, and constitutes the upper surface of one structure. In addition, a reinforcing bent portion 24A is formed at the right end portion of the utility chamber cover 24 by bending downward. Further, on the right side of the utility chamber cover 24, two insertion ports 24B are provided in the vicinity of the bent portion 24A.

  Here, the two insertion ports 24B provided in the utility chamber cover 24 will be described. The two insertion openings 24B are used to insert two protruding claws 25B provided in a hydraulic equipment cover 25, which will be described later, and have predetermined spacing dimensions in the front and rear directions so as to correspond to the protruding claws 25B. It is arranged with. Further, as shown in FIG. 7, the insertion port 24B is located on the right side and has a slit-like wide portion 24B1 extending in the front and rear directions with a width dimension A significantly larger than the width dimension C of the protruding claw 25B. A stepped opening is formed by a claw engaging portion 24B2 which is provided on the front side of the wide width portion 24B1 and is cut out on the left side and has a width dimension B with which the protruding claw 25B can be engaged. Has been.

  Note that the width dimension B of the claw engaging portion 24B2 is only slightly larger than, for example, the width dimension C of the protruding claw 25B. It is the dimension which can suppress. In addition, each insertion port 24B is formed through the utility chamber cover 24, so that the reinforcing bent portion 24A is not divided in the middle as in the case where it is formed in a notch. The curved portion 24A can be formed long and the strength of the utility chamber cover 24 can be increased.

  And even if the protruding claw 25B is displaced in the front and rear directions, it can be inserted into the wide portion 24B1 of the insertion port 24B with a margin corresponding to the width formed. Further, after the protruding claw 25B is inserted into the wide portion 24B1, the protruding claw 25B is moved to the front side of the wide portion 24B1, thereby engaging the protruding claw 25B with the narrow claw engaging portion 24B2. As a result, the left portion of the hydraulic equipment cover 25 can be fixedly attached so as not to rattle forward and backward by the claw engaging portion 24B2.

  On the other hand, support protrusions 24C are provided in the vicinity of each insertion port 24B of the utility chamber cover 24, specifically between each insertion port 24B and the bent portion 24A. As shown in FIG. 8, the support protrusion 24 </ b> C has a protruding claw 25 </ b> B on the left side of a hydraulic device cover 25 described later inserted into the insertion port 24 </ b> B, and a hydraulic oil tank 14 and a fuel tank 15 on the right side of the hydraulic device cover 25. When affixed to the hydraulic device cover 25, the hydraulic device cover 25 comes into contact with the lower side. Thereby, the support protrusion 24C can prevent the left side portion of the hydraulic device cover 25 from rattling up and down.

  Reference numeral 25 denotes a hydraulic equipment cover as a cover member provided between the utility chamber cover 24, the hydraulic oil tank 14, and the fuel tank 15. The hydraulic equipment cover 25 is for attaching and detaching hydraulic equipment such as the swing motor 18 and the control valve device 19 arranged in the equipment arrangement space 17. The hydraulic device cover 25 is formed as a rectangular plate that is long in the left and right directions, and a reinforcing bent portion 25A is bent downward on the front side.

  On the other hand, the left end portion of the hydraulic equipment cover 25 is provided with two protruding claws 25B protruding leftward, and each protruding claw 25B is a plate having a width C, for example, as shown in FIG. It is formed by bending it into a crank shape. Each protruding claw 25 </ b> B is inserted into each insertion port 24 </ b> B of the utility chamber cover 24.

  Furthermore, a plurality of, for example, four screw insertion holes 25C constituting a part of the fastening means are provided at the right end portion of the hydraulic equipment cover 25. The four screw insertion holes 25C are arranged so that the right side of the hydraulic device cover 25 is connected to the hydraulic oil tank 14, fuel, and the right side of the hydraulic device cover 25 in a state where the protruding claws 25B are inserted into the claw engaging portions 24B2 of the insertion ports 24B of the utility chamber cover 24. The spacing dimension is appropriately set so as to communicate with the two female screws 14B of the hydraulic oil tank 14 and the two female screws 15B of the fuel tank 15 when arranged on the tank 15 (see FIG. 9).

  Reference numeral 26 denotes a plurality of, for example, four screw members provided for attaching the right side of the hydraulic equipment cover 25 to the hydraulic oil tank 14 and the fuel tank 15. The screw members 26 constitute fastening means together with the female screws 14B of the hydraulic oil tank 14, the female screws 15B of the fuel tank 15, and the screw insertion holes 25C of the hydraulic equipment cover 25. The screw members 26 are inserted into the screw insertion holes 25C of the hydraulic device cover 25 and screwed into the female screws 14B and 15B of the tanks 14 and 15, respectively. 15 can be fixed in a fastened state. Further, the hydraulic device cover 25 can be removed by loosening each screw member 26.

  Reference numeral 27 denotes a boarding / alighting step provided from the front side to the upper side of the tool box 16 located on the right side where the tanks 14 and 15 are provided. The step 27 for getting on and off includes a first step 27A extending from the front end of the swivel frame 6 to the front side, a second step 27B provided on the upper surface of the tool box 16, and an upper side of the tool box 16 from the front side of the fuel tank 15. The third step 27C extends. Thus, the operator can easily and safely get on and off the hydraulic oil tank 14 and the fuel tank 15 which are work places where the hydraulic equipment cover 25 is attached and removed by using the step 27 for getting on and off. be able to.

  The hydraulic excavator 1 according to the present embodiment has the above-described configuration. Next, the operation of the hydraulic excavator 1 will be described.

  First, the operator gets on the cab 7 and sits on the driver's seat. By operating the operating lever in this state, the lower traveling body 2 can be driven to move the hydraulic excavator 1 forward or backward. In addition, an operator seated in the driver's seat can operate the turning device 3 and the work device 5 to perform excavation work of soil and the like by operating the operation lever.

  Next, the mounting operation of the hydraulic equipment cover 25, which is a characteristic part of the present embodiment, will be described with reference to FIGS.

  When performing the installation work of the hydraulic equipment cover 25, the worker can use the step 27 for getting on and off to go up, for example, above the hydraulic oil tank 14 where the work is performed. Then, as shown in FIGS. 5 and 6, the operator who rides on the hydraulic oil tank 14 holds the hydraulic device cover 25 and inserts the protruding claws 25 </ b> B into the insertion ports 24 </ b> B of the utility chamber cover 24.

  At this time, as shown in FIG. 7, the protruding claw 25B can be inserted into the wide portion 24B1 of the wide insertion port 24B. It can be accurately inserted into the mouth 24B. Then, when the protruding claws 25B are inserted into the wide portion 24B1, the protruding claws 25B are moved to the front side (lower left side in FIG. 7) of the wide portion 24B1 together with the hydraulic device cover 25, thereby engaging the protruding claws 25B with the claws. It can be engaged with the portion 24B2. Thereby, each protrusion nail | claw 25B of the hydraulic equipment cover 25 can be restrained by the narrow nail | claw engaging part 24B2 so that it may not rattle forward and back.

  Then, after each protruding claw 25B of the hydraulic device cover 25 is inserted into the insertion port 24B of the utility chamber cover 24, the screw member 26 is inserted into the screw insertion hole 25C of the hydraulic device cover 25 as shown in FIG. Screw into the female threads 14B and 15B of the tanks 14 and 15. Thereby, the hydraulic equipment cover 25 can be attached between the utility chamber cover 24 and the tanks 14 and 15 without moving from above the hydraulic oil tank 14 (see FIG. 4).

  Further, when the right side of the hydraulic equipment cover 25 is fixed to the tanks 14 and 15, as shown in FIG. 8, the support protrusion 24C of the utility chamber cover 24 comes into contact with the hydraulic equipment cover 25 from below, and the protruding claws 25B. Is pressed against the lower surface of the utility chamber cover 24. Accordingly, it is possible to prevent the left side portion of the hydraulic device cover 25 from shaking up and down by the support protrusion 24C.

  On the other hand, by loosening each screw member 26, the hydraulic equipment cover 25 can be removed, and maintenance work of hydraulic equipment such as the swing motor 18 and the control valve device 19 can be performed.

  Thus, according to the present embodiment, the left utility chamber cover 24 is provided with the insertion port 24 </ b> B, and between the utility chamber cover 24, the hydraulic oil tank 14, and the fuel tank 15 to cover the device arrangement space 17. On the left side of the provided hydraulic equipment cover 25, a protruding claw 25B for inserting into the insertion port 24B of the utility chamber cover 24 is provided, and the hydraulic device cover is inserted with the protruding claw 25B inserted into the insertion port 24B. The right side of 25 is attached to each tank 14, 15 using a screw member 26 or the like.

  Accordingly, the left side of the hydraulic equipment cover 25 can be attached simply by inserting the protruding claw 25B into the insertion port 24B of the utility chamber cover 24. Further, since only the right side of the hydraulic equipment cover 25 is fastened to the hydraulic oil tank 14 and the fuel tank 15 using fastening means such as the screw member 26 and the female screws 14B and 15B, the screw member 26 and the female screws 14B and 15B are used. Etc. can be reduced.

  As a result, the left side of the hydraulic equipment cover 25 can be easily attached to the utility chamber cover 24 because the protruding claw 25B is merely inserted into the insertion port 24B. In addition, since the screw member 26, the female screws 14B, 15B and the like are provided only on the right side of the hydraulic equipment cover 25, the operator can easily perform work without moving from the hydraulic oil tank 14, for example. In addition, the number of screw members 26 and the like to be fastened in the assembly work can be reduced. As a result, the assembly workability of the hydraulic equipment cover 25 with respect to the utility chamber cover 24 and the tanks 14 and 15 can be improved.

  Further, when the protruding claw 25B of the hydraulic equipment cover 25 is inserted into the insertion port 24B of the utility chamber cover 24, the protruding claw 25B is inserted into the wide portion 24B1 formed with a width dimension A larger than the width dimension C of the protruding claw 25B. The projecting claw 25B of the hydraulic device cover 25 can be easily inserted into the wide portion 24B1 of the insertion port 24B even from above the separated hydraulic oil tank 14. Moreover, the insertion port 24B can engage the protruding claw 25B with the claw engaging portion 24B2 having a small width B by moving the protruding claw 25B inserted into the wide width portion 24B1 to the front side.

  Therefore, the projecting claw 25B of the hydraulic device cover 25 can be inserted into the insertion port 24B even from the remote hydraulic oil tank 14, and the workability of the assembly work can be improved. Further, in a state in which the protruding claw 25B is engaged with the narrow claw engaging portion 24B2, it is possible to prevent the left side of the hydraulic device cover 25 from rattling in the front and rear directions in the length direction of the insertion port 24B. It is possible to reduce noise due to vibration and improve the life and reliability.

  Further, the utility chamber cover 24 is provided with a support protrusion 24C that comes into contact with the hydraulic equipment cover 25 from below, so that the left side of the hydraulic equipment cover 25 rattles upward and downward by the support protrusion 24C. It can be prevented, noise caused by vibrations can be reduced, and the life can be extended.

  On the other hand, since the right side of the hydraulic equipment cover 25 is fixed on the tanks 14 and 15 using fastening means such as the screw member 26 and the female screws 14B and 15B, it can be easily fastened using a screw fastening tool or the like. Can do. Further, by loosening the screw member 26, the hydraulic equipment cover 25 can be removed, and maintenance work for the swing motor 18, the control valve device 19, and the like can be performed.

  Further, a step 27 for getting on and off the tanks 14 and 15 is provided at the right position where the hydraulic oil tank 14 and the fuel tank 15 for mounting and removing the hydraulic equipment cover 25 are provided. Therefore, by using the step 27 for getting on and off, the operator can easily move to the tanks 14 and 15 for performing the attaching / detaching work of the hydraulic equipment cover 25 at the shortest distance without making a detour. Thereby, the movement accompanying attachment work of the hydraulic equipment cover 25 can be reduced and assembly workability, safety, etc. can be improved.

  In the embodiment, the case where the right side of the hydraulic equipment cover 25 serving as the cover member is attached to both the hydraulic oil tank 14 and the fuel tank 15 serving as other structures has been described as an example. However, the present invention is not limited to this, and the right side of the hydraulic equipment cover 25 ′ may be attached only to the hydraulic oil tank 14 as in the first modification shown in FIG. 10, for example.

  Further, as in the second modified example shown in FIG. 11, the hydraulic oil tank 14 'is arranged on the front side, and the fuel tank 15' is arranged adjacent to the rear side of the hydraulic oil tank 14 ', so that the hydraulic pressure is increased. The right side of the device cover 25 ″ may be attached only to the fuel tank 15.

  In the embodiment, the utility chamber cover 24 on the left side is provided with an insertion port 24B, and a protruding claw 25B provided on the left side of the hydraulic device cover 25 is inserted into the insertion port 24B. The case where it is configured to be fastened to the tanks 14 and 15 has been described as an example. However, the present invention is not limited to this, and an insertion port is provided in the right hydraulic oil tank and / or fuel tank, and a projecting claw provided on the right side of the hydraulic device cover is inserted into the insertion port, thereby the hydraulic device cover. It is good also as a structure which fastens the left side of to a utility room cover. Moreover, it is good also as a structure which attaches a hydraulic equipment cover to structures other than a hydraulic-oil tank, a fuel tank, and a utility chamber cover using the attachment structure by embodiment.

  On the other hand, in the embodiment, the insertion port 24B is formed in the utility chamber cover 24 as a stepped opening by the wide wide portion 24B1 and the narrow claw engaging portion 24B2. However, the present invention is not limited to this. For example, the insertion port may have another shape such as an oblong shape or an oval shape.

  In the embodiment, the case where hydraulic equipment such as the swing motor 18 and the control valve device 19 is accommodated in the equipment arrangement space 17 has been described as an example. However, the present invention is not limited to this. For example, a part of the engine 9 or the like may be arranged in the device arrangement space 17 as a device.

  Further, in the embodiment, the hydraulic excavator 1 including the crawler type lower traveling body 2 is described as an example of the construction machine. However, the present invention is not limited to this, and may be applied to, for example, a hydraulic excavator provided with a wheel-type lower traveling body. In addition, it can be widely applied to other construction machines equipped with a turning device such as a hydraulic crane.

1 Excavator (construction machine)
DESCRIPTION OF SYMBOLS 2 Lower traveling body 3 Turning apparatus 4 Upper turning body 6 Turning frame 7 Cab 9 Engine 10 Hydraulic pump 12 Partition plate (one structure)
13 Utility room 14, 14 'Hydraulic oil tank (other structures)
14A Top plate 14B, 15B Female thread (fastening means)
15,15 'Fuel tank (other structures)
15A Bracket 17 Equipment placement space 18 Turning motor (hydraulic equipment)
19 Control valve device (hydraulic equipment)
20 Building Cover 21 Left Side Cover 22 Right Side Cover 23 Top Cover 24 Utility Room Cover (One Structure)
24B insertion port 24B1 wide part 24B2 claw engaging part 24C support protrusion 25, 25 ', 25 "hydraulic equipment cover (cover member)
25B Protruding claw 25C Screw insertion hole (fastening means)
26 Screw member (fastening means)
27 Steps for getting on and off A Width dimension of the wide part of the insertion slot B Width dimension of the claw engaging part of the insertion slot C Width dimension of the protruding claw

Claims (6)

A self-propelled lower traveling body, and an upper revolving body mounted on the lower traveling body so as to be able to swivel, the upper revolving body comprising a revolving frame forming a support structure, a left of the revolving frame, A cab provided on the front side of the turning frame on one side in the right direction and on which an operator gets on, an engine provided on the rear side of the turning frame for driving a hydraulic pump, and located between the cab and the engine One structure provided on one side of the left and right direction of the swivel frame, another structure provided on the other side of the left and right direction of the swivel frame with a distance from the one structure, and these A device arrangement space formed between one structure and another structure, and a cover member provided between the one structure and another structure to cover the device arrangement space In the construction machine provided,
The one structure is provided with an insertion port located on the upper surface side,
The cover member is provided with a protruding claw that is located on one side of the left and right directions and is inserted into the insertion port of the one structure.
The other side of the cover member is provided with fastening means for fastening the cover member to another structure in a state where the protruding claw is inserted into the insertion port. Construction machinery.   The insertion port has a wide portion formed larger than a width dimension of the projecting claw, and is formed narrower than the wide portion on one end side in a length direction of the wide portion, and the projecting claw is engaged with the insertion port. The construction machine according to claim 1, wherein the construction machine is configured by a claw engaging portion capable of being operated.   3. The construction machine according to claim 1, wherein a supporting protrusion is provided on an upper surface of the one structure and is located in the vicinity of the insertion port and contacts the cover member from below.   The fastening means includes a female screw provided on the upper surface side of the other structure, a screw insertion hole located on the other side of the cover member and communicating with the female screw, and the female screw inserted through the screw insertion hole. The construction machine according to claim 1, 2 or 3, wherein the construction machine is constituted by a screw member that is fixed to another structure by being screwed to the cover member.   5. The boarding / alighting step for getting on and off the other structure is provided on the other side in the left and right direction where the other structure is arranged. Construction machinery.   The one structure is a part of a building cover that defines a utility room, the other structure is a tank for storing hydraulic oil and / or fuel, and hydraulic equipment is arranged in the equipment arrangement space. The construction machine according to claim 1, 2, 3, 4, or 5, wherein the cover member is a hydraulic device cover that covers the hydraulic device.

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